vmmapi.c revision 256281
1/*- 2 * Copyright (c) 2011 NetApp, Inc. 3 * All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in the 12 * documentation and/or other materials provided with the distribution. 13 * 14 * THIS SOFTWARE IS PROVIDED BY NETAPP, INC ``AS IS'' AND 15 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 17 * ARE DISCLAIMED. IN NO EVENT SHALL NETAPP, INC OR CONTRIBUTORS BE LIABLE 18 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 24 * SUCH DAMAGE. 25 * 26 * $FreeBSD: stable/10/lib/libvmmapi/vmmapi.c 256176 2013-10-09 03:56:07Z neel $ 27 */ 28 29#include <sys/cdefs.h> 30__FBSDID("$FreeBSD: stable/10/lib/libvmmapi/vmmapi.c 256176 2013-10-09 03:56:07Z neel $"); 31 32#include <sys/types.h> 33#include <sys/sysctl.h> 34#include <sys/ioctl.h> 35#include <sys/mman.h> 36 37#include <machine/specialreg.h> 38 39#include <stdio.h> 40#include <stdlib.h> 41#include <assert.h> 42#include <string.h> 43#include <fcntl.h> 44#include <unistd.h> 45 46#include <libutil.h> 47 48#include <machine/vmm.h> 49#include <machine/vmm_dev.h> 50 51#include "vmmapi.h" 52 53#define MB (1024 * 1024UL) 54#define GB (1024 * 1024 * 1024UL) 55 56struct vmctx { 57 int fd; 58 uint32_t lowmem_limit; 59 enum vm_mmap_style vms; 60 size_t lowmem; 61 char *lowmem_addr; 62 size_t highmem; 63 char *highmem_addr; 64 char *name; 65}; 66 67#define CREATE(x) sysctlbyname("hw.vmm.create", NULL, NULL, (x), strlen((x))) 68#define DESTROY(x) sysctlbyname("hw.vmm.destroy", NULL, NULL, (x), strlen((x))) 69 70static int 71vm_device_open(const char *name) 72{ 73 int fd, len; 74 char *vmfile; 75 76 len = strlen("/dev/vmm/") + strlen(name) + 1; 77 vmfile = malloc(len); 78 assert(vmfile != NULL); 79 snprintf(vmfile, len, "/dev/vmm/%s", name); 80 81 /* Open the device file */ 82 fd = open(vmfile, O_RDWR, 0); 83 84 free(vmfile); 85 return (fd); 86} 87 88int 89vm_create(const char *name) 90{ 91 92 return (CREATE((char *)name)); 93} 94 95struct vmctx * 96vm_open(const char *name) 97{ 98 struct vmctx *vm; 99 100 vm = malloc(sizeof(struct vmctx) + strlen(name) + 1); 101 assert(vm != NULL); 102 103 vm->fd = -1; 104 vm->lowmem_limit = 3 * GB; 105 vm->name = (char *)(vm + 1); 106 strcpy(vm->name, name); 107 108 if ((vm->fd = vm_device_open(vm->name)) < 0) 109 goto err; 110 111 return (vm); 112err: 113 vm_destroy(vm); 114 return (NULL); 115} 116 117void 118vm_destroy(struct vmctx *vm) 119{ 120 assert(vm != NULL); 121 122 if (vm->fd >= 0) 123 close(vm->fd); 124 DESTROY(vm->name); 125 126 free(vm); 127} 128 129int 130vm_parse_memsize(const char *optarg, size_t *ret_memsize) 131{ 132 char *endptr; 133 size_t optval; 134 int error; 135 136 optval = strtoul(optarg, &endptr, 0); 137 if (*optarg != '\0' && *endptr == '\0') { 138 /* 139 * For the sake of backward compatibility if the memory size 140 * specified on the command line is less than a megabyte then 141 * it is interpreted as being in units of MB. 142 */ 143 if (optval < MB) 144 optval *= MB; 145 *ret_memsize = optval; 146 error = 0; 147 } else 148 error = expand_number(optarg, ret_memsize); 149 150 return (error); 151} 152 153int 154vm_get_memory_seg(struct vmctx *ctx, vm_paddr_t gpa, size_t *ret_len, 155 int *wired) 156{ 157 int error; 158 struct vm_memory_segment seg; 159 160 bzero(&seg, sizeof(seg)); 161 seg.gpa = gpa; 162 error = ioctl(ctx->fd, VM_GET_MEMORY_SEG, &seg); 163 *ret_len = seg.len; 164 if (wired != NULL) 165 *wired = seg.wired; 166 return (error); 167} 168 169uint32_t 170vm_get_lowmem_limit(struct vmctx *ctx) 171{ 172 173 return (ctx->lowmem_limit); 174} 175 176void 177vm_set_lowmem_limit(struct vmctx *ctx, uint32_t limit) 178{ 179 180 ctx->lowmem_limit = limit; 181} 182 183static int 184setup_memory_segment(struct vmctx *ctx, vm_paddr_t gpa, size_t len, char **addr) 185{ 186 int error; 187 struct vm_memory_segment seg; 188 189 /* 190 * Create and optionally map 'len' bytes of memory at guest 191 * physical address 'gpa' 192 */ 193 bzero(&seg, sizeof(seg)); 194 seg.gpa = gpa; 195 seg.len = len; 196 error = ioctl(ctx->fd, VM_MAP_MEMORY, &seg); 197 if (error == 0 && addr != NULL) { 198 *addr = mmap(NULL, len, PROT_READ | PROT_WRITE, MAP_SHARED, 199 ctx->fd, gpa); 200 } 201 return (error); 202} 203 204int 205vm_setup_memory(struct vmctx *ctx, size_t memsize, enum vm_mmap_style vms) 206{ 207 char **addr; 208 int error; 209 210 /* XXX VM_MMAP_SPARSE not implemented yet */ 211 assert(vms == VM_MMAP_NONE || vms == VM_MMAP_ALL); 212 ctx->vms = vms; 213 214 /* 215 * If 'memsize' cannot fit entirely in the 'lowmem' segment then 216 * create another 'highmem' segment above 4GB for the remainder. 217 */ 218 if (memsize > ctx->lowmem_limit) { 219 ctx->lowmem = ctx->lowmem_limit; 220 ctx->highmem = memsize - ctx->lowmem; 221 } else { 222 ctx->lowmem = memsize; 223 ctx->highmem = 0; 224 } 225 226 if (ctx->lowmem > 0) { 227 addr = (vms == VM_MMAP_ALL) ? &ctx->lowmem_addr : NULL; 228 error = setup_memory_segment(ctx, 0, ctx->lowmem, addr); 229 if (error) 230 return (error); 231 } 232 233 if (ctx->highmem > 0) { 234 addr = (vms == VM_MMAP_ALL) ? &ctx->highmem_addr : NULL; 235 error = setup_memory_segment(ctx, 4*GB, ctx->highmem, addr); 236 if (error) 237 return (error); 238 } 239 240 return (0); 241} 242 243void * 244vm_map_gpa(struct vmctx *ctx, vm_paddr_t gaddr, size_t len) 245{ 246 247 /* XXX VM_MMAP_SPARSE not implemented yet */ 248 assert(ctx->vms == VM_MMAP_ALL); 249 250 if (gaddr < ctx->lowmem && gaddr + len <= ctx->lowmem) 251 return ((void *)(ctx->lowmem_addr + gaddr)); 252 253 if (gaddr >= 4*GB) { 254 gaddr -= 4*GB; 255 if (gaddr < ctx->highmem && gaddr + len <= ctx->highmem) 256 return ((void *)(ctx->highmem_addr + gaddr)); 257 } 258 259 return (NULL); 260} 261 262int 263vm_set_desc(struct vmctx *ctx, int vcpu, int reg, 264 uint64_t base, uint32_t limit, uint32_t access) 265{ 266 int error; 267 struct vm_seg_desc vmsegdesc; 268 269 bzero(&vmsegdesc, sizeof(vmsegdesc)); 270 vmsegdesc.cpuid = vcpu; 271 vmsegdesc.regnum = reg; 272 vmsegdesc.desc.base = base; 273 vmsegdesc.desc.limit = limit; 274 vmsegdesc.desc.access = access; 275 276 error = ioctl(ctx->fd, VM_SET_SEGMENT_DESCRIPTOR, &vmsegdesc); 277 return (error); 278} 279 280int 281vm_get_desc(struct vmctx *ctx, int vcpu, int reg, 282 uint64_t *base, uint32_t *limit, uint32_t *access) 283{ 284 int error; 285 struct vm_seg_desc vmsegdesc; 286 287 bzero(&vmsegdesc, sizeof(vmsegdesc)); 288 vmsegdesc.cpuid = vcpu; 289 vmsegdesc.regnum = reg; 290 291 error = ioctl(ctx->fd, VM_GET_SEGMENT_DESCRIPTOR, &vmsegdesc); 292 if (error == 0) { 293 *base = vmsegdesc.desc.base; 294 *limit = vmsegdesc.desc.limit; 295 *access = vmsegdesc.desc.access; 296 } 297 return (error); 298} 299 300int 301vm_set_register(struct vmctx *ctx, int vcpu, int reg, uint64_t val) 302{ 303 int error; 304 struct vm_register vmreg; 305 306 bzero(&vmreg, sizeof(vmreg)); 307 vmreg.cpuid = vcpu; 308 vmreg.regnum = reg; 309 vmreg.regval = val; 310 311 error = ioctl(ctx->fd, VM_SET_REGISTER, &vmreg); 312 return (error); 313} 314 315int 316vm_get_register(struct vmctx *ctx, int vcpu, int reg, uint64_t *ret_val) 317{ 318 int error; 319 struct vm_register vmreg; 320 321 bzero(&vmreg, sizeof(vmreg)); 322 vmreg.cpuid = vcpu; 323 vmreg.regnum = reg; 324 325 error = ioctl(ctx->fd, VM_GET_REGISTER, &vmreg); 326 *ret_val = vmreg.regval; 327 return (error); 328} 329 330int 331vm_run(struct vmctx *ctx, int vcpu, uint64_t rip, struct vm_exit *vmexit) 332{ 333 int error; 334 struct vm_run vmrun; 335 336 bzero(&vmrun, sizeof(vmrun)); 337 vmrun.cpuid = vcpu; 338 vmrun.rip = rip; 339 340 error = ioctl(ctx->fd, VM_RUN, &vmrun); 341 bcopy(&vmrun.vm_exit, vmexit, sizeof(struct vm_exit)); 342 return (error); 343} 344 345static int 346vm_inject_event_real(struct vmctx *ctx, int vcpu, enum vm_event_type type, 347 int vector, int error_code, int error_code_valid) 348{ 349 struct vm_event ev; 350 351 bzero(&ev, sizeof(ev)); 352 ev.cpuid = vcpu; 353 ev.type = type; 354 ev.vector = vector; 355 ev.error_code = error_code; 356 ev.error_code_valid = error_code_valid; 357 358 return (ioctl(ctx->fd, VM_INJECT_EVENT, &ev)); 359} 360 361int 362vm_inject_event(struct vmctx *ctx, int vcpu, enum vm_event_type type, 363 int vector) 364{ 365 366 return (vm_inject_event_real(ctx, vcpu, type, vector, 0, 0)); 367} 368 369int 370vm_inject_event2(struct vmctx *ctx, int vcpu, enum vm_event_type type, 371 int vector, int error_code) 372{ 373 374 return (vm_inject_event_real(ctx, vcpu, type, vector, error_code, 1)); 375} 376 377int 378vm_apicid2vcpu(struct vmctx *ctx, int apicid) 379{ 380 /* 381 * The apic id associated with the 'vcpu' has the same numerical value 382 * as the 'vcpu' itself. 383 */ 384 return (apicid); 385} 386 387int 388vm_lapic_irq(struct vmctx *ctx, int vcpu, int vector) 389{ 390 struct vm_lapic_irq vmirq; 391 392 bzero(&vmirq, sizeof(vmirq)); 393 vmirq.cpuid = vcpu; 394 vmirq.vector = vector; 395 396 return (ioctl(ctx->fd, VM_LAPIC_IRQ, &vmirq)); 397} 398 399int 400vm_inject_nmi(struct vmctx *ctx, int vcpu) 401{ 402 struct vm_nmi vmnmi; 403 404 bzero(&vmnmi, sizeof(vmnmi)); 405 vmnmi.cpuid = vcpu; 406 407 return (ioctl(ctx->fd, VM_INJECT_NMI, &vmnmi)); 408} 409 410static struct { 411 const char *name; 412 int type; 413} capstrmap[] = { 414 { "hlt_exit", VM_CAP_HALT_EXIT }, 415 { "mtrap_exit", VM_CAP_MTRAP_EXIT }, 416 { "pause_exit", VM_CAP_PAUSE_EXIT }, 417 { "unrestricted_guest", VM_CAP_UNRESTRICTED_GUEST }, 418 { 0 } 419}; 420 421int 422vm_capability_name2type(const char *capname) 423{ 424 int i; 425 426 for (i = 0; capstrmap[i].name != NULL && capname != NULL; i++) { 427 if (strcmp(capstrmap[i].name, capname) == 0) 428 return (capstrmap[i].type); 429 } 430 431 return (-1); 432} 433 434const char * 435vm_capability_type2name(int type) 436{ 437 int i; 438 439 for (i = 0; capstrmap[i].name != NULL; i++) { 440 if (capstrmap[i].type == type) 441 return (capstrmap[i].name); 442 } 443 444 return (NULL); 445} 446 447int 448vm_get_capability(struct vmctx *ctx, int vcpu, enum vm_cap_type cap, 449 int *retval) 450{ 451 int error; 452 struct vm_capability vmcap; 453 454 bzero(&vmcap, sizeof(vmcap)); 455 vmcap.cpuid = vcpu; 456 vmcap.captype = cap; 457 458 error = ioctl(ctx->fd, VM_GET_CAPABILITY, &vmcap); 459 *retval = vmcap.capval; 460 return (error); 461} 462 463int 464vm_set_capability(struct vmctx *ctx, int vcpu, enum vm_cap_type cap, int val) 465{ 466 struct vm_capability vmcap; 467 468 bzero(&vmcap, sizeof(vmcap)); 469 vmcap.cpuid = vcpu; 470 vmcap.captype = cap; 471 vmcap.capval = val; 472 473 return (ioctl(ctx->fd, VM_SET_CAPABILITY, &vmcap)); 474} 475 476int 477vm_assign_pptdev(struct vmctx *ctx, int bus, int slot, int func) 478{ 479 struct vm_pptdev pptdev; 480 481 bzero(&pptdev, sizeof(pptdev)); 482 pptdev.bus = bus; 483 pptdev.slot = slot; 484 pptdev.func = func; 485 486 return (ioctl(ctx->fd, VM_BIND_PPTDEV, &pptdev)); 487} 488 489int 490vm_unassign_pptdev(struct vmctx *ctx, int bus, int slot, int func) 491{ 492 struct vm_pptdev pptdev; 493 494 bzero(&pptdev, sizeof(pptdev)); 495 pptdev.bus = bus; 496 pptdev.slot = slot; 497 pptdev.func = func; 498 499 return (ioctl(ctx->fd, VM_UNBIND_PPTDEV, &pptdev)); 500} 501 502int 503vm_map_pptdev_mmio(struct vmctx *ctx, int bus, int slot, int func, 504 vm_paddr_t gpa, size_t len, vm_paddr_t hpa) 505{ 506 struct vm_pptdev_mmio pptmmio; 507 508 bzero(&pptmmio, sizeof(pptmmio)); 509 pptmmio.bus = bus; 510 pptmmio.slot = slot; 511 pptmmio.func = func; 512 pptmmio.gpa = gpa; 513 pptmmio.len = len; 514 pptmmio.hpa = hpa; 515 516 return (ioctl(ctx->fd, VM_MAP_PPTDEV_MMIO, &pptmmio)); 517} 518 519int 520vm_setup_msi(struct vmctx *ctx, int vcpu, int bus, int slot, int func, 521 int destcpu, int vector, int numvec) 522{ 523 struct vm_pptdev_msi pptmsi; 524 525 bzero(&pptmsi, sizeof(pptmsi)); 526 pptmsi.vcpu = vcpu; 527 pptmsi.bus = bus; 528 pptmsi.slot = slot; 529 pptmsi.func = func; 530 pptmsi.destcpu = destcpu; 531 pptmsi.vector = vector; 532 pptmsi.numvec = numvec; 533 534 return (ioctl(ctx->fd, VM_PPTDEV_MSI, &pptmsi)); 535} 536 537int 538vm_setup_msix(struct vmctx *ctx, int vcpu, int bus, int slot, int func, 539 int idx, uint32_t msg, uint32_t vector_control, uint64_t addr) 540{ 541 struct vm_pptdev_msix pptmsix; 542 543 bzero(&pptmsix, sizeof(pptmsix)); 544 pptmsix.vcpu = vcpu; 545 pptmsix.bus = bus; 546 pptmsix.slot = slot; 547 pptmsix.func = func; 548 pptmsix.idx = idx; 549 pptmsix.msg = msg; 550 pptmsix.addr = addr; 551 pptmsix.vector_control = vector_control; 552 553 return ioctl(ctx->fd, VM_PPTDEV_MSIX, &pptmsix); 554} 555 556uint64_t * 557vm_get_stats(struct vmctx *ctx, int vcpu, struct timeval *ret_tv, 558 int *ret_entries) 559{ 560 int error; 561 562 static struct vm_stats vmstats; 563 564 vmstats.cpuid = vcpu; 565 566 error = ioctl(ctx->fd, VM_STATS, &vmstats); 567 if (error == 0) { 568 if (ret_entries) 569 *ret_entries = vmstats.num_entries; 570 if (ret_tv) 571 *ret_tv = vmstats.tv; 572 return (vmstats.statbuf); 573 } else 574 return (NULL); 575} 576 577const char * 578vm_get_stat_desc(struct vmctx *ctx, int index) 579{ 580 static struct vm_stat_desc statdesc; 581 582 statdesc.index = index; 583 if (ioctl(ctx->fd, VM_STAT_DESC, &statdesc) == 0) 584 return (statdesc.desc); 585 else 586 return (NULL); 587} 588 589int 590vm_get_x2apic_state(struct vmctx *ctx, int vcpu, enum x2apic_state *state) 591{ 592 int error; 593 struct vm_x2apic x2apic; 594 595 bzero(&x2apic, sizeof(x2apic)); 596 x2apic.cpuid = vcpu; 597 598 error = ioctl(ctx->fd, VM_GET_X2APIC_STATE, &x2apic); 599 *state = x2apic.state; 600 return (error); 601} 602 603int 604vm_set_x2apic_state(struct vmctx *ctx, int vcpu, enum x2apic_state state) 605{ 606 int error; 607 struct vm_x2apic x2apic; 608 609 bzero(&x2apic, sizeof(x2apic)); 610 x2apic.cpuid = vcpu; 611 x2apic.state = state; 612 613 error = ioctl(ctx->fd, VM_SET_X2APIC_STATE, &x2apic); 614 615 return (error); 616} 617 618/* 619 * From Intel Vol 3a: 620 * Table 9-1. IA-32 Processor States Following Power-up, Reset or INIT 621 */ 622int 623vcpu_reset(struct vmctx *vmctx, int vcpu) 624{ 625 int error; 626 uint64_t rflags, rip, cr0, cr4, zero, desc_base, rdx; 627 uint32_t desc_access, desc_limit; 628 uint16_t sel; 629 630 zero = 0; 631 632 rflags = 0x2; 633 error = vm_set_register(vmctx, vcpu, VM_REG_GUEST_RFLAGS, rflags); 634 if (error) 635 goto done; 636 637 rip = 0xfff0; 638 if ((error = vm_set_register(vmctx, vcpu, VM_REG_GUEST_RIP, rip)) != 0) 639 goto done; 640 641 cr0 = CR0_NE; 642 if ((error = vm_set_register(vmctx, vcpu, VM_REG_GUEST_CR0, cr0)) != 0) 643 goto done; 644 645 if ((error = vm_set_register(vmctx, vcpu, VM_REG_GUEST_CR3, zero)) != 0) 646 goto done; 647 648 cr4 = 0; 649 if ((error = vm_set_register(vmctx, vcpu, VM_REG_GUEST_CR4, cr4)) != 0) 650 goto done; 651 652 /* 653 * CS: present, r/w, accessed, 16-bit, byte granularity, usable 654 */ 655 desc_base = 0xffff0000; 656 desc_limit = 0xffff; 657 desc_access = 0x0093; 658 error = vm_set_desc(vmctx, vcpu, VM_REG_GUEST_CS, 659 desc_base, desc_limit, desc_access); 660 if (error) 661 goto done; 662 663 sel = 0xf000; 664 if ((error = vm_set_register(vmctx, vcpu, VM_REG_GUEST_CS, sel)) != 0) 665 goto done; 666 667 /* 668 * SS,DS,ES,FS,GS: present, r/w, accessed, 16-bit, byte granularity 669 */ 670 desc_base = 0; 671 desc_limit = 0xffff; 672 desc_access = 0x0093; 673 error = vm_set_desc(vmctx, vcpu, VM_REG_GUEST_SS, 674 desc_base, desc_limit, desc_access); 675 if (error) 676 goto done; 677 678 error = vm_set_desc(vmctx, vcpu, VM_REG_GUEST_DS, 679 desc_base, desc_limit, desc_access); 680 if (error) 681 goto done; 682 683 error = vm_set_desc(vmctx, vcpu, VM_REG_GUEST_ES, 684 desc_base, desc_limit, desc_access); 685 if (error) 686 goto done; 687 688 error = vm_set_desc(vmctx, vcpu, VM_REG_GUEST_FS, 689 desc_base, desc_limit, desc_access); 690 if (error) 691 goto done; 692 693 error = vm_set_desc(vmctx, vcpu, VM_REG_GUEST_GS, 694 desc_base, desc_limit, desc_access); 695 if (error) 696 goto done; 697 698 sel = 0; 699 if ((error = vm_set_register(vmctx, vcpu, VM_REG_GUEST_SS, sel)) != 0) 700 goto done; 701 if ((error = vm_set_register(vmctx, vcpu, VM_REG_GUEST_DS, sel)) != 0) 702 goto done; 703 if ((error = vm_set_register(vmctx, vcpu, VM_REG_GUEST_ES, sel)) != 0) 704 goto done; 705 if ((error = vm_set_register(vmctx, vcpu, VM_REG_GUEST_FS, sel)) != 0) 706 goto done; 707 if ((error = vm_set_register(vmctx, vcpu, VM_REG_GUEST_GS, sel)) != 0) 708 goto done; 709 710 /* General purpose registers */ 711 rdx = 0xf00; 712 if ((error = vm_set_register(vmctx, vcpu, VM_REG_GUEST_RAX, zero)) != 0) 713 goto done; 714 if ((error = vm_set_register(vmctx, vcpu, VM_REG_GUEST_RBX, zero)) != 0) 715 goto done; 716 if ((error = vm_set_register(vmctx, vcpu, VM_REG_GUEST_RCX, zero)) != 0) 717 goto done; 718 if ((error = vm_set_register(vmctx, vcpu, VM_REG_GUEST_RDX, rdx)) != 0) 719 goto done; 720 if ((error = vm_set_register(vmctx, vcpu, VM_REG_GUEST_RSI, zero)) != 0) 721 goto done; 722 if ((error = vm_set_register(vmctx, vcpu, VM_REG_GUEST_RDI, zero)) != 0) 723 goto done; 724 if ((error = vm_set_register(vmctx, vcpu, VM_REG_GUEST_RBP, zero)) != 0) 725 goto done; 726 if ((error = vm_set_register(vmctx, vcpu, VM_REG_GUEST_RSP, zero)) != 0) 727 goto done; 728 729 /* GDTR, IDTR */ 730 desc_base = 0; 731 desc_limit = 0xffff; 732 desc_access = 0; 733 error = vm_set_desc(vmctx, vcpu, VM_REG_GUEST_GDTR, 734 desc_base, desc_limit, desc_access); 735 if (error != 0) 736 goto done; 737 738 error = vm_set_desc(vmctx, vcpu, VM_REG_GUEST_IDTR, 739 desc_base, desc_limit, desc_access); 740 if (error != 0) 741 goto done; 742 743 /* TR */ 744 desc_base = 0; 745 desc_limit = 0xffff; 746 desc_access = 0x0000008b; 747 error = vm_set_desc(vmctx, vcpu, VM_REG_GUEST_TR, 0, 0, desc_access); 748 if (error) 749 goto done; 750 751 sel = 0; 752 if ((error = vm_set_register(vmctx, vcpu, VM_REG_GUEST_TR, sel)) != 0) 753 goto done; 754 755 /* LDTR */ 756 desc_base = 0; 757 desc_limit = 0xffff; 758 desc_access = 0x00000082; 759 error = vm_set_desc(vmctx, vcpu, VM_REG_GUEST_LDTR, desc_base, 760 desc_limit, desc_access); 761 if (error) 762 goto done; 763 764 sel = 0; 765 if ((error = vm_set_register(vmctx, vcpu, VM_REG_GUEST_LDTR, 0)) != 0) 766 goto done; 767 768 /* XXX cr2, debug registers */ 769 770 error = 0; 771done: 772 return (error); 773} 774 775int 776vm_get_gpa_pmap(struct vmctx *ctx, uint64_t gpa, uint64_t *pte, int *num) 777{ 778 int error, i; 779 struct vm_gpa_pte gpapte; 780 781 bzero(&gpapte, sizeof(gpapte)); 782 gpapte.gpa = gpa; 783 784 error = ioctl(ctx->fd, VM_GET_GPA_PMAP, &gpapte); 785 786 if (error == 0) { 787 *num = gpapte.ptenum; 788 for (i = 0; i < gpapte.ptenum; i++) 789 pte[i] = gpapte.pte[i]; 790 } 791 792 return (error); 793} 794